package jdbc;

import java.sql.Connection;
import java.sql.ResultSet;
import java.sql.Statement;
import java.util.Scanner;

/**
 * 完成用户登录功能
 */
public class LoginDemo {
    public static void main(String[] args) {
       // Scanner scan=new Scanner(System.in);
       //System.out.println("请输入用户名");
       // String username = scan.nextLine();
       // System.out.println("请输入密码");
       // String password = scan.nextLine();
        UserInfo userInfo=InputUtil.getInputObject(new UserInfo(),"欢迎登录","登录");
        System.out.println(userInfo);
        try(Connection con = DBUtil.getConnection()){
            Statement statement = con.createStatement();
            String sql = "SELECT id,username,password,nickname,age " +
                    "FROM userinfo " +
                    "WHERE username='"+userInfo.getUsername()+"' AND password='"+userInfo.getPassword()+"'";
            ResultSet rs=statement.executeQuery(sql);
            if (rs.next()){
                System.out.println("登录成功");
                System.out.println(userInfo.toString());
            }else{
                System.out.println("用户名或密码错误");
            }
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }
}
